[CURATOR-225] Add a new mode ErrorMode.KEEP

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Not A Problem
• Affects Version/s: 2.8.0
• Component/s: Framework
• Labels: curator locking queue
• Environment: Windows 7/Java 8
• Assignee: Unassigned
• Reporter: Zhihong Zhang
• Created: 24/Jun/15 17:55
• Updated: 29/Mar/16 14:07
• Resolved: 29/Mar/16 14:07

Description

When locking is used and consumer throws exception, there are currently 2 modes, REQUEUE and DELETE. In our use-cases, the items in the queue need to keep in the same FIFO order, even in case of the error. A 3rd mode is needed to keep the queue order intact.